In this section, “amount subject to apportionment” means the amount newly made available under section 48103 of this title for a fiscal year.

On the first day of each fiscal year, the Secretary of Transportation shall apportion the amount subject to apportionment for that fiscal year as provided in this section.

The Secretary shall apportion to the sponsor of each primary airport for each fiscal year an amount equal to—

The Secretary shall apportion to the sponsor of each primary airport for each fiscal year an amount equal to—

(A) Apportionment.—The Secretary shall apportion to the sponsor of each primary airport for each fiscal year an amount equal to— (i) $7.80 for each of the first 50,000 passenger boardings at the airport during the prior calendar year; (ii) $5.20 for each of the next 50,000 passenger boardings at the airport during the prior calendar year; (iii) $2.60 for each of the next 400,000 passenger boardings at the airport during the prior calendar year; (iv) $.65 for each of the next 500,000 passenger boardings at the airport during the prior calendar year; and (v) $.50 for each additional passenger boarding at the airport during the prior calendar year.

(B) Minimum and maximum apportionments.— Not less than $650,000 nor more than $22,000,000 may be apportioned under subparagraph (A) of this paragraph to an airport sponsor for a primary airport for each fiscal year.

(C) Special rule.—In any fiscal year in which the total amount made available under section 48103 is $3,200,000,000 or more— (i) the amount to be apportioned to a sponsor under subparagraph (A) shall be increased by doubling the amount that would otherwise be apportioned; (ii) the minimum apportionment to a sponsor under subparagraph (B) shall be $1,000,000 rather than $650,000; and (iii) the maximum apportionment to a sponsor under subparagraph (B) shall be $26,000,000 rather than $22,000,000.

(D) New airports.— Notwithstanding subparagraph (A), the Secretary shall apportion on the first day of the first fiscal year following the official opening of a new airport with scheduled passenger air transportation an amount equal to the minimum amount set forth in subparagraph (B) or (C), as appropriate, to the sponsor of such airport.

(E) Use of previous fiscal year’s apportionment.—Notwithstanding subparagraph (A), the Secretary may apportion to an airport sponsor in a fiscal year an amount equal to the amount apportioned to that sponsor in the previous fiscal year if the Secretary finds that— (i) passenger boardings at the airport fell below 10,000 in the calendar year used to calculate the apportionment; (ii) the airport had at least 10,000 passenger boardings in the calendar year prior to the calendar year used to calculate apportionments to airport sponsors in a fiscal year; and (iii) the cause of the shortfall in passenger boardings was a temporary but significant interruption in service by an air carrier to that airport due to an employment action, natural disaster, or other event unrelated to the demand for air transportation at the affected airport.

(F) Special rule for fiscal years 2018 through 2020.—Notwithstanding subparagraph (A) and subject to subparagraph (G), the Secretary shall apportion to a sponsor of an airport under that subparagraph [1] for each of fiscal years 2018 through 2020 an amount based on the number of passenger boardings at the airport during calendar year 2012 if the airport— (i) had 10,000 or more passenger boardings during calendar year 2012; (ii) had fewer than 10,000 passenger boardings during the calendar year used to calculate the apportionment for fiscal year 2018, 2019, or 2020, as applicable, under subparagraph (A); and (iii) had scheduled air service at any point in the calendar year used to calculate the apportionment.

(G) Limitations and waivers.— The authority to make apportionments in the manner prescribed in subparagraph (F) may be utilized no more than 3 years in a row. The Secretary may waive this limitation if the Secretary determines that an airport’s enplanements are substantially close to 10,000 enplanements and the airport sponsor or affected communities are taking reasonable steps to restore enplanements above 10,000.

(H) Minimum apportionment for commercial service airports with more than 8,000 passenger boardings in a calendar year.— Not less than $600,000 may be apportioned under subparagraph (A) for each fiscal year to each sponsor of a commercial service airport that had fewer than 10,000 passenger boardings, but at least 8,000 passenger boardings, during the prior calendar year.

(I) Seasonal airports.— Notwithstanding section 47102, if the Secretary determines that a commercial service airport with at least 8,000 passenger boardings receives scheduled air carrier service for fewer than 6 months in the calendar year used to calculate apportionments to airport sponsors in a fiscal year, then the Secretary shall consider the airport to be a nonhub primary airport for purposes of this chapter.

Subject to subparagraph (D), the Secretary shall apportion an amount equal to 3.5 percent of the amount subject to apportionment each fiscal year to the sponsors of airports served by aircraft providing air transportation of only cargo with a total annual landed weight of more than 100,000,000 pounds.

(A) Apportionment.— Subject to subparagraph (D), the Secretary shall apportion an amount equal to 3.5 percent of the amount subject to apportionment each fiscal year to the sponsors of airports served by aircraft providing air transportation of only cargo with a total annual landed weight of more than 100,000,000 pounds.

(B) Suballocation formula.— Any funds apportioned under subparagraph (A) to sponsors of airports described in subparagraph (A) shall be allocated among those airports in the proportion that the total annual landed weight of aircraft described in subparagraph (A) landing at each of those airports bears to the total annual landed weight of those aircraft landing at all those airports.

(C) Limitation.— In any fiscal year in which the total amount made available under section 48103 is less than $3,200,000,000, not more than 8 percent of the amount apportioned under subparagraph (A) may be apportioned for any one airport.

(D) Distribution to other airports.— Before apportioning amounts to the sponsors of airports under subparagraph (A) for a fiscal year, the Secretary may set-aside a portion of such amounts for distribution to the sponsors of other airports, selected by the Secretary, that the Secretary finds will be served primarily by aircraft providing air transportation of only cargo.

(E) Determination of landed weight.— Landed weight under this paragraph is the landed weight of aircraft landing at each airport described in subparagraph (A) during the prior calendar year.

In this subsection, the following definitions apply:

In this subsection, the following definitions apply:

(A) Area.— The term “area” includes land and water.

(B) Population.— The term “population” means the population stated in the latest decennial census of the United States.

Except as provided in paragraph (3), the Secretary shall apportion to the States 18.5 percent of the amount subject to apportionment for each fiscal year as follows:

(A) 0.66 percent of the apportioned amount to Guam, American Samoa, the Northern Mariana Islands, and the Virgin Islands.

(B) Except as provided in paragraph (4), 49.67 percent of the apportioned amount for airports, excluding primary airports but including reliever and nonprimary commercial service airports, in States not named in subparagraph (A) in the proportion that the population of each of those States bears to the total population of all of those States.

(C) Except as provided in paragraph (4), 49.67 percent of the apportioned amount for airports, excluding primary airports but including reliever and nonprimary commercial service airports, in States not named in subparagraph (A) in the proportion that the area of each of those States bears to the total area of all of those States.

In any fiscal year in which the total amount made available under section 48103 is $3,200,000,000 or more, rather than making an apportionment under paragraph (2), the Secretary shall apportion 20 percent of the amount subject to apportionment for each fiscal year as follows:

(A) To each airport, excluding primary airports but including reliever and nonprimary commercial service airports, in States the lesser of— (i) $150,000; or (ii) ⅕ of the most recently published estimate of the 5-year costs for airport improvement for the airport, as listed in the national plan of integrated airport systems developed by the Federal Aviation Administration under section 47103.

(B) Any remaining amount to States as follows: (i) 0.62 percent of the remaining amount to Guam, American Samoa, the Commonwealth of the Northern Mariana Islands, and the Virgin Islands. (ii) Except as provided in paragraph (4), 49.69 percent of the remaining amount for airports, excluding primary airports but including reliever and nonprimary commercial service airports, in States not named in clause (i) in the proportion that the population of each of those States bears to the total population of all of those States. (iii) Except as provided in paragraph (4), 49.69 percent of the remaining amount for airports, excluding primary airports but including reliever and nonprimary commercial service airports, in States not named in clause (i) in the proportion that the area of each of those States bears to the total area of all of those States.

(C) During fiscal years 2019 and 2020— (i) an airport that accrued apportionment funds under subparagraph (A) in fiscal year 2013 that is listed as having an unclassified status under the most recent national plan of integrated airport systems shall continue to accrue apportionment funds under subparagraph (A) at the same amount the airport accrued apportionment funds in fiscal year 2013, subject to the conditions of this paragraph; (ii) notwithstanding the period of availability as described in section 47117(b), an amount apportioned to an airport under clause (i) shall be available to the airport only during the fiscal year in which the amount is apportioned; and (iii) notwithstanding the waiver permitted under section 47117(c)(2), an airport receiving apportionment funds under clause (i) may not waive its claim to any part of the apportioned funds in order to make the funds available for a grant for another public-use airport.

(D) An airport that re-establishes its classified status shall be eligible to accrue apportionment funds pursuant to subparagraph (A) so long as such airport retains its classified status.

(4) Airports in alaska, puerto rico, and hawaii.— An amount apportioned under paragraph (2) or (3) to Alaska, Puerto Rico, or Hawaii for airports in such State may be made available by the Secretary for any public airport in those respective jurisdictions.

The Secretary shall use the highway specifications of a State for airfield pavement construction and improvement using funds made available under this subsection at nonprimary airports serving aircraft that do not exceed 60,000 pounds gross weight if—

(A) such State requests the use of such specifications; and

(B) the Secretary determines that— (i) safety will not be negatively affected; and (ii) the life of the pavement, with necessary maintenance and upkeep, will not be shorter than it would be if constructed using Administration standards.

(6) Integrated airport system planning.— Notwithstanding any other provision of this subsection, funds made available under this subsection may be used for integrated airport system planning that encompasses one or more primary airports.

Notwithstanding any other provision of this subsection, the Secretary may apportion to an airport sponsor in a fiscal year an amount equal to the minimum apportionment available under subsection (c)(1)(B) if the Secretary finds that the airport—

(A) received scheduled or unscheduled air service from a large certificated air carrier (as defined in part 241 of title 14, Code of Federal Regulations, or such other regulations as may be issued by the Secretary under the authority of section 41709) in the calendar year used to calculate the apportionment; and

(B) had more than 10,000 passenger boardings in the calendar year used to calculate the apportionment.

Notwithstanding subsections (c) and (d) of this section, the Secretary may apportion amounts for airports in Alaska in the way in which amounts were apportioned in the fiscal year ending September 30, 1980, under section 15(a) of the Act. However, in apportioning amounts for a fiscal year under this subsection, the Secretary shall apportion—

Notwithstanding subsections (c) and (d) of this section, the Secretary may apportion amounts for airports in Alaska in the way in which amounts were apportioned in the fiscal year ending September 30, 1980, under section 15(a) of the Act. However, in apportioning amounts for a fiscal year under this subsection, the Secretary shall apportion—

(A) for each primary airport at least as much as would be apportioned for the airport under subsection (c)(1) of this section; and

(B) a total amount at least equal to the minimum amount required to be apportioned to airports in Alaska in the fiscal year ending September 30, 1980, under section 15(a)(3)(A) of the Act.

(2) Authority for discretionary grants.— This subsection does not prohibit the Secretary from making project grants for airports in Alaska from the discretionary fund under section 47115 of this title.

(3) Airports eligible for funds.— An amount apportioned under this subsection may be used for any public airport in Alaska.

(4) Special rule.— In any fiscal year in which the total amount made available under section 48103 is $3,200,000,000 or more, the amount that may be apportioned for airports in Alaska under paragraph (1) shall be increased by doubling the amount that would otherwise be apportioned.

Subject to paragraph (3), an amount that would be apportioned under this section (except subsection (c)(2)) in a fiscal year to the sponsor of an airport having at least .25 percent of the total number of boardings each year in the United States and for which a charge is imposed in the fiscal year under section 40117 of this title shall be reduced by an amount equal to—

Subject to paragraph (3), an amount that would be apportioned under this section (except subsection (c)(2)) in a fiscal year to the sponsor of an airport having at least .25 percent of the total number of boardings each year in the United States and for which a charge is imposed in the fiscal year under section 40117 of this title shall be reduced by an amount equal to—

(A) in the case of a charge of $3.00 or less— (i) except as provided in clause (ii), 50 percent of the projected revenues from the charge in the fiscal year but not by more than 50 percent of the amount that otherwise would be apportioned under this section; or (ii) with respect to an airport in Hawaii, 50 percent of the projected revenues from the charge in the fiscal year but not by more than 50 percent of the excess of— (I) the amount that otherwise would be apportioned under this section; over (II) the amount equal to the amount specified in subclause (I) multiplied by the percentage of the total passenger boardings at the applicable airport that are comprised of interisland passengers; and

(B) in the case of a charge of more than $3.00— (i) except as provided in clause (ii), 75 percent of the projected revenues from the charge in the fiscal year but not by more than 75 percent of the amount that otherwise would be apportioned under this section; or (ii) with respect to an airport in Hawaii, 75 percent of the projected revenues from the charge in the fiscal year but not by more than 75 percent of the excess of— (I) the amount that otherwise would be apportioned under this section; over (II) the amount equal to the amount specified in subclause (I) multiplied by the percentage of the total passenger boardings at the applicable airport that are comprised of interisland passengers.

(2) Effective date of reduction.— A reduction in an apportionment required by paragraph (1) shall not take effect until the first fiscal year following the year in which the collection of the charge imposed under section 40117 is begun.

Beginning with the fiscal year following the first calendar year in which the sponsor of an airport has more than .25 percent of the total number of boardings in the United States, the sum of the amount that would be apportioned under this section after application of paragraph (1) in a fiscal year to such sponsor and the projected revenues to be derived from the charge in such fiscal year shall not be less than the sum of the apportionment to such airport for the preceding fiscal year and the revenues derived from such charge in the preceding fiscal year.

(A) In general.— Beginning with the fiscal year following the first calendar year in which the sponsor of an airport has more than .25 percent of the total number of boardings in the United States, the sum of the amount that would be apportioned under this section after application of paragraph (1) in a fiscal year to such sponsor and the projected revenues to be derived from the charge in such fiscal year shall not be less than the sum of the apportionment to such airport for the preceding fiscal year and the revenues derived from such charge in the preceding fiscal year.

(B) Effective period.— Subparagraph (A) shall be in effect for fiscal year 2004.

The Secretary shall apportion amounts for airports in Puerto Rico and all other United States territories in accordance with this section. This subsection does not prohibit the Secretary from making project grants for airports in Puerto Rico or other United States territories from the discretionary fund under section 47115.

(Pub. L. 103–272, § 1(e), July 5, 1994, 108 Stat. 1268; Pub. L. 103–429, § 6(66), Oct. 31, 1994, 108 Stat. 4386; Pub. L. 104–264, title I, § 121, Oct. 9, 1996, 110 Stat. 3217; Pub. L. 106–181, title I, §§ 104(a)–(d), 105(c), Apr. 5, 2000, 114 Stat. 67–71; Pub. L. 108–176, title I, §§ 146, 147, Dec. 12, 2003, 117 Stat. 2504; Pub. L. 109–115, div. A, title I, § 109, Nov. 30, 2005, 119 Stat. 2402; Pub. L. 112–95, title I, §§ 111(c)(2)(A)(iii), 141–143, Feb. 14, 2012, 126 Stat. 18, 28, 29; Pub. L. 114–190, title II, § 2301, July 15, 2016, 130 Stat. 638; Pub. L. 115–63, title I, § 102(b), Sept. 29, 2017, 131 Stat. 1169; Pub. L. 115–254, div. B, title I, §§ 136, 148(b), 151, 164, Oct. 5, 2018, 132 Stat. 3210, 3214, 3215, 3225.)